I'd like to think he'd have a place in an aggro deck, such as Pirate Warrior, but honestly, he's taking up a spot best used for another threat that can get you the extra points you need for lethal. Since he benefits both players, he can flip your superior board state into a disadvantage from which you won't recover. I just don't see a place for him in competitive Standard. Maybe something in Wild, or a future Tavern Brawl?

I've actually found this guy p nice in jade druid/ramp druid in general. The real cool thing about him vs Jeeves is that it's not an end of turn trigger, if he's in play and able to attack you can dump your hand and then attack with him and regain it without ending your turn